ChartDirector 7.0 (Python Edition)

White Vertical Bar Meters


          

This example demonstrates vertical bar meters in a white coloring scheme, and with bars in various shading styles.

Source Code Listing

pythondemo\whitevbarmeter.py
#!/usr/bin/python # The ChartDirector for Python module is assumed to be in "../lib" import sys, os sys.path.insert(0, os.path.join(os.path.abspath(sys.path[0]), "..", "lib")) from pychartdir import * def createChart(chartIndex) : # The value to display on the meter value = 74.25 # Create a LinearMeter object of size 70 x 260 pixels with very light grey (0xeeeeee) backgruond # and a grey (0xbbbbbb) 3-pixel thick rounded frame m = LinearMeter(70, 260, 0xeeeeee, 0xbbbbbb) m.setRoundedFrame(Transparent) m.setThickFrame(3) # Set the scale region top-left corner at (28, 33), with size of 20 x 194 pixels. The scale # labels are located on the left (default - implies vertical meter). m.setMeter(28, 33, 20, 194) # Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10) # Demostrate different types of color scales smoothColorScale = [0, 0x0000ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100, 0xff0000] stepColorScale = [0, 0x00dd00, 50, 0xffff00, 80, 0xff0000, 100] highColorScale = [70, Transparent, 100, 0xff0000] lowColorScale = [0, 0x0000ff, 30, Transparent] if chartIndex == 0 : # Add a blue (0x0088ff) bar from 0 to value with glass effect and 4 pixel rounded corners m.addBar(0, value, 0x0088ff, glassEffect(NormalGlare, Left), 4) # Add a 6-pixel thick smooth color scale at x = 53 (right of meter scale) m.addColorScale(smoothColorScale, 53, 6) elif chartIndex == 1 : # Add a green (0x00cc00) bar from 0 to value with bar lighting effect and 4 pixel rounded # corners m.addBar(0, value, 0x00cc00, barLighting(), 4) # Add a high only color scale at x = 52 (right of meter scale) with thickness varying from 0 # to 8 m.addColorScale(highColorScale, 52, 0, 52, 8) # Add a low only color scale at x = 52 (right of meter scale) with thickness varying from 8 # to 0 m.addColorScale(lowColorScale, 52, 8, 52, 0) elif chartIndex == 2 : # Add a purple (0x0088ff) bar from 0 to value with glass effect and 4 pixel rounded corners m.addBar(0, value, 0x8833dd, glassEffect(NormalGlare, Left), 4) # Add a high only color scale at x = 52 (right of meter scale) with thickness varying from 0 # to 8 m.addColorScale(highColorScale, 52, 0, 52, 8) elif chartIndex == 3 : # Add a orange (0xff8800) bar from 0 to value with cylinder lighting effect m.addBar(0, value, 0xff8800, cylinderEffect()) # Add a high only color scale at x = 53 (right of meter scale) m.addColorScale(highColorScale, 53, 6) elif chartIndex == 4 : # Add a red (0xee3333) bar from 0 to value with glass effect and 4 pixel rounded corners m.addBar(0, value, 0xee3333, glassEffect(NormalGlare, Left), 4) # Add a step color scale at x = 53 (right of meter scale) m.addColorScale(stepColorScale, 53, 6) else : # Add a grey (0xaaaaaa) bar from 0 to value m.addBar(0, value, 0xaaaaaa) # Add a smooth color scale at x = 52 (right of meter scale) with thickness varying from 0 to # 8 m.addColorScale(smoothColorScale, 52, 0, 52, 8) # Add a title using 8pt Arial Bold font with grey (0xbbbbbb) background m.addTitle("Temp C", "Arial Bold", 8, TextColor).setBackground(0xbbbbbb) # Add a text box at the bottom-center. Display the value using white (0xffffff) 8pt Arial Bold # font on a black (0x000000) background with rounded border. t = m.addText(m.getWidth() / 2, m.getHeight() - 8, m.formatValue(value, "2"), "Arial Bold", 8, 0xffffff, Bottom) t.setBackground(0x000000) t.setRoundedCorners(3) t.setMargin2(5, 5, 2, 1) # Output the chart m.makeChart("whitevbarmeter%s.png" % chartIndex) createChart(0) createChart(1) createChart(2) createChart(3) createChart(4) createChart(5)